Vertical continuous drilling machine



Sept. 13, 1932. F, M, DAVls 1,877,277

VERTICAL CONTINUOUS DRILLING MACHINE A TTORNEYS Sagt., i3, 1932. .Ef M,DAVIS l VERTICALQNTINUOUS DRILLIM MACHINE Filed Dec. '16, 1929 4Sheets-Sheet 2 I N VEN TGR.

Sept. 13, 1932. F. M. DAVIS VERTICAL CONTINUOUS DRILLING MACHINE FiledDec. 16. 1929 1 SheetsfSheet 5 IN VEN TOR.

A TTORNEYS Sepggls, 1932. M. DAP/1s, 1,877,277

VERTICAL CONTINUOUS DRILLING MACHINE i Filed Dec. 16. 1929 4Sheefs-Sheet 4 INVENToR.

-TORNEYS a novel manner to eliminate friction.

Patented Sept. 13, 1932 Unirse stares; Partnr ortica FRANK M. DAVISLQFMILWAUKEE, WISCONSIN p VERTICAL CONTINUOUS DNILLING MACHINE Application:filed December l16,1929. Serial No. 414,460.

This invention relates to` improvements in vertical continuous drillingmachines more particularly adapted for drilling a large number of likeparts. Y Y

A further object of the invention is to provide a vertical continuousdrilling machine having a plurality of drilling spindles arranged topermit continuous drilling and reaming of pistons, yolres, connectingrods, and so forth, which may be mounted on a moving part of the machineat one point and removed at another point,V the drilling or reamingoperation being completed between the two points. Y i A further objectof the invention is to provide a vertical continuous drilling machinein'which the drills or other work instrumentalities are automaticallyraised from the work when the operation is completed to permit removalof the completed parts and the mounting of other parts to be workedupon.

A further object of the invention is to provide .a vertical continuousdrilling machine having pick-off gears betweenpdrive i' and transverseshaft and between transverse shaft and machine rotating shaft to permitvarious relative speed changes of the parts.

A further object of the invention is to provide a vertical continuousdrilling machine in which the drill spindles and the supporting tableare adjusted vertically to permit use of drills of diii'erent lengthsand Work of varying sizes. a Y y i A further object of the invention isto providera vertical continuous drilling Amachine having a force feedoiling means for oiling the parts and the drills while cutting material.

A further object of the invention is to provide a vertical continuousdrillingmachine having equalizing drive to spindles and rotation ofmachine and table.

A further object of the invention is to provide a vertical continuous.drilling machine having means for taking the end thrust of thetoothpressure of the gears.

A further object of the invention is to pro-` videa vertical continuousdrilling -rnachine in which the double spur gear is mounted in i takenon line 9-9 of Fig. 8; `and A further object of the invention is toprovide a vertical continuous'drilling ma# chine which Yis' of simpleconstruction7 is strong anddurable and is well adapted for the purposesdescribed. Y a

vWith the above and other objects in view the invention consists of theimproved vertical continuous drillingmachine a-nd itsV parts vandcombinations as set forthin the claims, and all equivalents thereof. n

- In the accompanying drawings in which the same reference charactersindicate ythe same parts in all of the views: Fig. l is a verticalsectional view ofthe improved vertical continuous drilling machine; YFig. 2 is a horizontal a of taken on line 2-2 of Fig. 1;.

sectional view there- Fig is a similar view taken online 3--3fr of Fig.l; l 4 isV a vertical sectional view taken Von linel-lf of Fig. 1;

larger 'scaleshowing the means for adjustf ably supporting the spindleactuating cam;

Fig. 8 isa detail View partly in section of one of thespindles andconnected parts;

Fig. 9 is a horizontal sectional detail view Fig. 10 is an enlargeddetail sectional viewv of one of the ring gearspindle bearings.`

Referring tothe drawingsthe numeral 10 indicates a base member orsupport to which a vertical tubular standard l1 is connected.

A. circularcasing or frame 12, formedifor convenience of manufacture inseveral parts, is iixedly mounted on the upper end portion of thestandard and at its upper end portion a horizontal shaftl?) is journaledand enclosedtherein. K An electricmotor 14 mounted on the upper portionofthe casing l2 has a gear train connection l5V with one end of theupper horizontal shaft 13. The upper horizontalshaft also has a pair ofbevel gears p. `16 mounted 'medially `of its length and a shaft oppositeto the end connected ito the upper Lends gear train 15. Thecomplementary clutch member 18 which is clutched to the shaft 13 by theclutch 17 has connected thereto a gear 19. Said gear forms part of agear chain 2O mounted on short shafts -21 and 22 journaled in thecircular casing. All of said shafts mentioned rotate in ball bearings 23to reduce friction.

A clutch lever 17 depending from the casing 12 provides for moving theclutch member into and out of clutching engagementwith its complementaryclutch member.

A casing cover 12" permits access to the geartrain 2O so that said gearsmay be removed and replaced by others of different relative diameters tochange the, speed ratio of the parts to suit the work involved.

` A lower horizontal worm` sha-ft 24 journaled in the circular casingand extending at right angles to the upper shaft 13 hasra bevel geardriving connection 25 with the short" shaft 22, and at its opposite endsis provided with worms 26. The worms 26 mesh with worm wheels 27 whichare mounted on the of short vertical shafts 28. Said vertical shafts arejournaled in ball bearings 29 mounted in the circular casing 12', andvat their lower end portions are provided with pinions 30.

A vertically extending sleeve 31 journaled on the standard 11 isprovided with a lower bearing portion 32'which rests-upon the base l'member 10 to support and Vpermit the freev turning of the sleevethereon. Said bearing portion is extended to forman oil chamber 33having a frustra-conical shaped4 cover V34 which extends into the oilchamber and is supported upon an annular lrib 35 extending inwardly froma medial portion of the outer wall of the oil chamber. The inclined wallof the cover directs the oil which drops from the work along itsperipheral edge and into the oilchamberwhile preventingthe metalVborings from the work from entering `the said chamber. A rotary pump 36mounted within the chamber `is driven by and'has a geared connectionwith a vertical shaft 37 which has a geared connection 37 with one ofthe spindle shafts 52. A flexible hose 38 connected to the pump andextending' upwardly to a discharge means 38 to points of use, isadaptedto supply oil t-o the work tools during their operation. i I

The upper circular casing 12 adjacent the upper end of the standard 11andbeneathY the horizontal shaft 13 is'provided with ball bearings 39 toreceive short vertical shafts 40.. Said shafts 40 are positioned ondiametrically opposite sides of the standard 11 and the upper endsthereof are provided with bevel gears 41 which are in mesh with anddriven by the bevel gears 16. The lower ends of the vertical shafts 4()are provided with ed on the upper end portion of the vertical- 1 lyextending sleeve 31 and the teeth 45 forming the gear are on the outerperiphery thereof andl are in mesh with the pinions 30 which rotate thering gear and connected parts.

A plurality of vertical rollers' 46 journaled 1` on shafts .47projecting radially from the ring gear 45 support the double gear ring44 and a plurality of horizontal rollers 47 journaled on vertical shafts48 arranged in spaced relation around the ring gear 45 bear against theinner periphery of the double gear ring and in combination with thevertical-rollers form the bearing for said double gear ring K and takethe side thrust'of the tooth pressureJ of meshing pinions.

A spindle sleeve tool carrier 49 mounted fast on the vertical sleeve 31is provided with outwardly projecting vertically extending bearings 50for slidably receiving spindle bearings 51 of the ball bearing endthrust type to reduce end thrust friction. Rotary spindles 52 journaledin said spindle bearings 51 extend slidably upwardly therefrom throughrotary bearings 53 journaled inthe ring gear 45. The portions 52 ofthespindles which extend slidably through the rotary bearings53 arelongitudinally grooved or castellated to slidably connect with pinions54 through which they extend. The hub portions of the pinions 54 extendabove the bearings 53 to engage and rotate the spindles 52 while thepinions are inmesh with androtated by the lower and larger diameter gear55 forming part of the double gear ring 44. The lower ends of thespindles have socket means 56 for receiving andholdingdrills or otherwork instrumentalities 57 for working on articles clamped to thesupporting table or tables 58 vertically adjustably mounted on thevertical sleeve 31 and turning therewith. The tables 58 are providedwith dovetail grooves 59 for convenience in clamping work or workholding igs thereto.

The lower portion of the upper circular casing 12 is provided withdepending flat bolts 60 having lower eyed ends. The bolts are adjustablyclamped tothe casing 12 by abolted band 61 between which and the'casingthe bolts extend and nuts .62 threaded on i' the bolts for adjustablyengaging the lower edges of the band and the casing to limit the Yupward movement of the bolts. A cam member 63 bolted to the inner sideof the eyed ends of the bolts 60 extends, at a verticalangleycircumferentially approximately three quarters of the distancearound t-he outer sides of the spaced reciprocal bearings 51'. Ballbearing rollers 64 jo-urna-led radially of the sleeves 31 and on theouter side portions of the reciprocal bearings 51 beneath the cam member63,

Acn

tend, to permit the insertion of a toothedkeyV 67 to engage the rackteeth 67 to vertically adjust the bearings with relation to the collars.Bolts 68 clamp the collars in adjusted positions on the bearings.

Chains or cables 69 connected to vthe collars 65 and extending overpulleys 7 0 depend downwardly therefrom in wells 71, formed in the toolcarrier or spindle sleeve Y4:9,.and `are connected to springs orcounterweights 72 to yieldingly hold the rollers 64 bearing againstA thecam and the spindles in their upper position. v

Referring-to Fig. 6 the numeral 73 indi-V cates the point of engagementof the spindle bearing rollers with the cam and the number 74 the pointof disengagement of said rollers.,

while the space 'jbetween said points is the time period during whichthespindles are not moved vertically and the articles c are either clampedtoor removed from the tables while the vertical sleeve upon which'thetables are mounted is relatively, slowly turning around the standard.

In operation the articles to be worked are mounted on jigs or otherholding means on the tables and as theA tables turn to have theirspindle'bearing rollers engage the cam portion 7 3 and the workinstrumentalitywill be gradually moved downwardly to engage the work orthe articles, and by the time each article reaches the pointcorresponding to the cam disengaging position of its respective spindlebearing roller, the work will be completed and the article removed andreplaced by another during the travel through thespace 7 5 to providefor continuous operation of the machine. The clutch lever 17 providesfor the manual control of the rotation,

of the vertical sleeve 31 and connected parts,

and if it is desired to change the speed of the the upper portion of thestandard,.a sleeve journaled on the standard andhaving at its upper endfa plurality vof circumferentially spaced and vertically `reciprocal endthrust e bearings, a ring gear mounted on the upper end portion of thesleeve, a vertical Ashaft having a pinion in mesh with the ring gearvfor rotating the sleeve, means for rotating the vertical shaft, pinionsjournaled on the ring gear in vertical alinement withthe bear- :f

ings, tool spindles Vfor holding lwork tools j ournaled in and extendingthrough the bear` ings and slidably engaging the pinions and rotatedthereby, a double gear ring journaled on rollers carried by the ringgear and in mesh with the pinions for rotating the tool spindles whilethey are being reciprocated and being carried by the sleeve, a verticalshaft carried bythe standard and havinga pinion meshing with one of thegears of the double gear ring for rotating said double gear ring, workholding members carried by the sleeve and positioned below the toolspindles, an oillreceiver located below the work holding members, a pumpmeans for forcing oilfrom the receiver to the tool spindles, saidbearings and tool: spindles being moved downwardlytowards'the workholding members bythe cam, and means for moving thebearings andthe toolspindles away from the work holding memberswhen th-e end of the cam isreached.

2. A vertical 'continuous drilling machine, comprising a base memberhaving a vertical standard and a cam extending partly around the upperportion of the standard, a sleeve.

j ournaledon the standard and having at its upper end a'plurality ofcircumierentially spaced and .vertically reciprocal end thrust bearings,a ring gear mounted on the upper end portion of the sleeve,verticalsha'fts positioned on opposite sides of the ring gear and havingpinions in mesh `therewith and at their upper ends having worm wheels, ahorizontal shaft having wormsin mesh with the worm wheels, a secondhorizontal shaft havinga driving Connection with a motor, a

clutch and geared connection between the two horizontal shafts,pinionsjournaled on the ring gear in vertical alinement with the bearings, toolspindles for holding worl tools j ournaled in and extending through thebear# ings and'having a splinedl and slidable engagement with thepinions journaled on' the 1 ring gear, a double gear ring 'journaled onf rollers carried by the'ringgear and in mesh withV the tool spindlepinions,fvertical shafts carried l by the standard and positioned -onopposite Vsides ofthe double gear ringand.

having pinions in mesh withone oil the gears of said double gear ring,the upper end pore tions of said last mentioned vertical shafts fhavinga Vgeared connection with the second horizontal shaft, workholding members carried bythe sleeve and positioned below thetoolspindles', saidl spindles and bearings moved towards the workholding members by the cam, .and means for moving the spindles andbearings away from .the work holding members when the end of the cam isreached. Y

f3. A vertical continuous drilling machine, comprising a basemember'having a vertical standard and a camrextending partly around theupper portion of the'standard, said cam member being vertically adjustably connected to the standard, a sleeve journaled on the standardand having at its upper end a plurality of circumferentially Yspaced.and vertically reciprocal end thrust bearings, a ring gear mounted onthe upper end portion of the sleeve,.vertical shaftspositioned onopposite sides of the ring gear and having pinions in mesh therewith andat their upper ends having worms, a horizontal shaft having worms inmesh with the `Worm wheels, a second horizontal shaft having a drivingconnection vwith a motor, a clutch and geared connection between the twohorizontal'shafts, pinions journaled on the ring gear in verticalalinement with the bearings, tool spindles for holding work toolsjournaled in and extending through the bearings and having a splined andslidable engagement with the pinions journaled on the ring gear,

a double gear ring journaled on rollers car-Y ried by the ring gear andin mesh with the tool spindle pinions, vertical shafts carried by thestandard and `positioned on opposite sides of the double gear ring andhaving pinions inmesh with one of the gears of said double gear ring,the upper Vend portions of said last mentioned vertical shafts having ageared connection with the second horizontal shaft, work holding memberscarried by the sleeve and positioned below the tool spindles,

` said spindles and bearings moved towards the work vholding members bythe cam, and means for vmoving the spindles and bearings away from VtheWork holding members when the end of the camis reached.

4. A continuous drilling machine, comprising a base member having astandardrand a` cam eXtendingpartly around the standard, a sleeveournaled on the standard and having a plurality of circumferentiallyspacedl reciprocal end thrustbearings, a ring gear mounted on thesleeve,a shaft having a pinion in .mesh with the ring gear for rotating thesleeve, means-for rotating the shaft, pinions ournaled on the ring gearin alinement with the bearings, tool spindles for holding work toolsVjournaled in and extending through the bearings and slidably engagingthe pinionsV and rotated thereby, a double gear ring journaled on thering gear and in mesh with the pinions for rotating the toolspindleswhile they are being reciprocated and being carried by thesleeve, a shaft carried by the standard and having afpinion meshing with-one fof the gears ef .the double gear ring for rotating said doublegear ring, work holding vmembers carried bythe sleeve and positioned atan end of the tool spindles,

an oil receiverrlocated near the worlcholding members, a pump meansforforcing oil from the receiver to the tool spindles, said bearings andtool spindles being moved towards the work holding. members by the cam,and means for moving the bearings and the tool spindles away from thework holding members when.

the end of the cam is reached.

5. A continuous drilling machine, comprising a base member lhaving astandard andra cam extending partly around the standard, a

vsleeve journaled on the standard and having a plurality ofcircumferentially spaced re-V ciprocal end thrust bearings, a singlering gear mounted on the sleeve, shafts positioned on opposite sides ofthe ring gear and having pinions in mesh therewith and also ,carryingworm wheels, a second shaft having worms inv mesh with theworrnlwheels,y a third shaft h aving a driving connection with a motor,a clutch and geared connection between said second' andthird shafts,pinionsvjourna'led yon the ring gear in alinement Vwith the bearings,tool Aspindles for holding work tools journaledin and extending throughthe bearings and having a splined and slidable engagement with thepinions journaled on the ring gear,

a' double gear ring journaled on said single ring gear and in mesh withthe tool spindle pinions, shafts carried by the standard and positioned`on opposite sides of the double gear ring andhaving pinions in meshwithv one ofthe gears of said double gear ring, the end portions of said-last ,mentioned shafts having Aa geared connection with said thirdshaft, work holding members carried bythe 'l sleeve and positioned at anend of the tool spindles, said spindles and bearings moved towards thework holding members by the cam, and means for moving the spindles and pshafts positioned on opposite sides of the ring'V gear and havingpinions in mesh therewith and also having worms, a second shaft havingworm wheelsin mesh with the worms, a third shaft having a drivingconnection with a motor, a clutch and geared connection between saidsecond and third shafts, pinions j ournaled on the ring gear inalinement with the bearings, tool spindles for holding work toolsjournaled in and extending through the bearings and -having a'splinedand slidable engagament with the pinions journaled on the single ringgear, a double gear ring journaled on rollers carried by the single ringgear and in mesh with the tool spindle pinions, shafts '5 carried by thestandard and positioned on opposite sides of the double gear ring andhaving pinions in mesh with one of the gears of said double gear ring,the end portions of said last mentioned shafts having a gearedconnection with said third shaft7 work holding members carried by thesleeve vand positioned at an end of the tool spindles, said spindles andbearings being movable towards the work holding members by the cam, andmeans for moving the spindles and bearings away from the work holdingmembers when the end of the cam is reached. In testimony whereof, Iaffix my signature.

FRANK M. DAVIS.

